comment-brainstorming

Brainstorming for a Comment Microformat

This is a brainstorm for comment microformat. Examples of a comment can be found here comment-examples

Problem

Shortform: How do you track blog comments you've made?

Longform: How do track the comments you have made on blogs, comments made on blogs your interested in and comments other people have made on your own blog?

How can you do this in a pragmatic way, ingested into some kind of data store, searched or aggregated?

Contributors

• Sarven Capadisli
• Singpolyma
• Martin McEvoy
• David Janes
• TobyInk

Discovered Elements

Based on the analysis of 25 real world examples of a comment, the results can be found at the Comment Analysis section

The following properties occur most regularly across all examples (92% or more)

• author (name)100%
• comment (text) 100%
• published (date) 100%
• author-url (href) 92%

Other achievable elements

• comment-link (a permalink) 40%

Schema

Proposal

• hentry (root class name)
  • The hentry element represents an individual comment entry
    1. http://microformats.org/wiki/hatom#Entry

• author (author)100%
  • an Entry Author element MUST be encoded in an hCard
    1. http://microformats.org/wiki/hatom#Entry_Author

• url (author-url) 92%
  • Use the url value of a hcard

• entry-content (comment) 100%
  • The "logical Entry Content" of an Entry is the concatenation, in order of appearance, of all the Entry Contents within the Entry
    1. http://microformats.org/wiki/hatom#Entry_Content

• updated (date) 100%
  • use the datetime-design-pattern to encode the updated datetime
    1. http://microformats.org/wiki/hatom#Entry_Updated

• contact (comment-link) 40%
  • Someone you know how to get in touch with, rel-contact is a two way link type (symmetric), comments on a web page are generally a way of contact between the author of a page and the publisher of a comment.
    1. http://gmpg.org/xfn/11#contact
    2. contact could be parsed as the in-reply-to Atom Threading Extension.
    3. The contact link type is used to determine the difference between a comment and an article or blog post

Example:

<div class="hentry" id="comment-001">
   <span class="author vcard">
       <span class="entry-title"><a class="url fn" href="http://contributor.com/blog/">Author</a> said</span>
   </span>
   about <span class="updated" title="2008-09-01T14:40:45+01:00">72 days ago</span>, 
   <div class="entry-content">
      <p>Hey Great Post</p>
    </div>
   <a rel="contact bookmark" href="#comment-001">link to this</a>
</div>

Parser Notes

• If the entry-title element is not used, the atom:title element SHOULD use the author value of the hentry presented in a contextual way, for example by prefixing the author value with "by" or appending it with "said" or "says".
• The entry-title element SHOULD not be an empty string, thus Providing Textual Content.

Summary

This proposal means that on the whole nothing new is needed for a comment microformat, just use hAtom, but instead of using just rel-bookmark use XFN rel-contact as well.

Feedback

If we can indicate that the hAtom entries are also comments, we could add an indicator beside hAtom.

<div class="hfeed hcomment">

hAtom pattern goes here.

</div>

Alternatively, we could add hcomment with hentry to indicate that the following hentry can be treated also as a comment.

<div class="hentry hcomment">

hEntry pattern goes here.

</div>

--Sarven Capadisli 11:59, 25 Sep 2008 (PDT)

• If an hfeed is embedded in an hEntry, that could be enough context to show "these items are replies to the one they're embedded in" singpolyma 12:20, 25 Sep 2008 (PDT)

hAtom and in-reply-to

A user comment (e.g., in blogs, wikis, forms) can be marked as an hAtom since it has a similar content pattern. A way to differentiate an hEntry (e.g., a blog post) from another hEntry (e.g., a user comment) can be done reusing in-reply-to from Atom Threading Extensions. It provides a mechanism to indicate that an entry is a response to another resource. rel="in-reply-to" can indicate that the current hEntry is a reply to another hEntry and has a reference point @href:

<a rel="in-reply-to" href="#comment_20080902144745">Parent</a>

hEntries that use rel="in-reply-to" can be considered as a comment entry in response to a parent entry in the threaded conversation (e.g., in blogs, wikis, forms).

hEntries that are chronologically listed can all use rel="in-reply-to" and refer to the root hEntry (e.g., blog post, form post)

By reusing in-reply-to, we can solve the microformats representation for user comments [1], [2], [3].

Example comment using in-reply-to: http://www.csarven.ca/my-responses-are-in-white

--Sarven Capadisli 21:25, 3 Oct 2008 (PDT)